package com.sfac.day6_22.service.impl;

import com.sfac.day6_22.dao.Covid19Dao;
import com.sfac.day6_22.entity.Covid19;
import com.sfac.day6_22.service.Covid19Service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;

/**
 * Covid19 Service Impl
 */
@Service
public class Covid19ServiceImpl implements Covid19Service {
	@Autowired
	private Covid19Dao covid19Dao;

	@Override
	public List<Covid19> getCovid19sForProvince() {
		return Optional
				.ofNullable(covid19Dao.getCovid19sForProvince())
				.orElse(Collections.emptyList());
	}

	@Override
	public List<Covid19> getCovid19sByProvince(String province) {
		return Optional
				.ofNullable(covid19Dao.getCovid19sByProvince(province))
				.orElse(Collections.emptyList())
				.stream()
				.sorted(Comparator.comparing(Covid19 :: getStatisticalTime))
				.collect(Collectors.toList());
	}
}
